wn.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Jonathan Cameron <jic23@kernel.org>

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v1 actually had a small bug in that it would still write to the device's
register when the sample was updated while the device was powered down. This was
not critical since it would send out the powerdown mode again.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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